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Finding the Fourth Proportional to 485,557.52, 728,443.20 and 148,600.76

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Solution

The fourth proportional to 485,557.52, 728,443.20 and 148,600.76 is: 222,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,557.52 : 728,443.20 = 148,600.76 : x
  2. Step 2: Convert to fraction form
    485,557.52/728,443.20 = 148,600.76/x
  3. Step 3: Cross multiply
    485,557.52x = 728,443.20 × 148,600.76
  4. Step 4: Simplify right side
    485,557.52x = 108,247,213,136.83
  5. Step 5: Solve for x
    x = 108,247,213,136.83/485,557.52
  6. Step 6: Final answer
    x = 222,933.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.